** Drag-n-drop programming ** from the cloud compiler is very convenient - for simple projects and getting new users started. And it is fast - typically taking only some seconds to download and then reset the module. But here, printf is your friend, and often your only friend, (supplemented somewhat by the LEDs). ** CMSIS-DAP **, in firmware 141212, appears to offer a lot more capability for programming, break-points, single-step, register access and more. From my side, using Win7 and now Win10, I have struggled mightily to find a scenario that works - and I haven't found a combination that is "usable". One collection of tools took about 3 minutes to successfully download and run "blinky". ** Focusing on the LPC1768 module ** * What PC toolset are you using [compiler, debugger s/w, driver combinations, etc]? * What is the performance you see [how long to program, how responsive is it when stepping]? * Is there a setup/configuration guide that you followed? ** Other modules ** If you are using a different mbed module, and perhaps with an external debug tool, can you similarly share your experience? * What module? * What debugging tool? Replicated this to the [[https://developer.mbed.org/forum/mbed/topic/27678/|forum]] for improved visibility. Please follow up there.